"I'd be interested in seeing a feature to track where your money comes from over the course of the game. I envision four graphs as a function of character level and/or turn count: money from selling items, money from monster drops, money from the floor, and money from mining. I'm curious how these graphs would change with different player styles."

"I second that request... Also, an overall chart of other items such as XP/turn, gold/turn, a chart of each letter (ie monster) and how many kills of each, how many finds of each weapon, by ranking (cursed, avg, good, ego, artifact)."